Tenon ing-machine



(No Model.)

W. H. BENNETT. TBNONING'MAGHINB. No. 517,599. Patented Apr. 3, 1894.

dllllllll ,n connections which hold it to the lever.

UNITED STATES PATENT OFFICE.

WILLIAM H. BENNETT, OF CHICAGO, ILLINOIS.v

TENONlNG-MACHINE.

4S'PIECIIEICAILION forming part of Letters Patent No. 517,599,datedApril Sv, 1894.

' Application filed December 30, 1892. Serial No. 456.812. (No model.)

ing place. i

The object of my invention is to produce a clamp which may beoperatedfrom one side of the machine, and which shall be capable ofclamping timber of various thicknesses and of various inclinations.

To this end, my invention consists in a clamp for use on va tenoningmachine comprising a cross bar in the form of apivoted lever, supportedabove the carriage and carrying amclamp which engages the timber uponthe carriage, and holds it during the tenon-` ing operation.

My invention consists further in a clamp comprising a pivoted leversupported above the carriage, and provided with a counterpoise tofacilitate its movement, said lever carrying the clamp plate, whichoperates to hold the timber upon the carriage.

My invention consists further in a preferred construction, wherein auniversal pivot is given to the lever, and in connection there with abinding cam for holding the lever in adjusted position.

My invention consists further in a clamp comprising a pivoted levercarrying a presser plate having a universal pivot, whereby it may adaptitself to the different inclinations in the timber.

My invention consists 'further in the general and speciicdetails ofconstructionand v combination of parts, all as hereinafter more fullyset forth.

In the drawings-Figure 1 is a view in elevation, partly in section, of aclamp embodying my preferred construction. Fig. 2 is a detail View ofthe binding cam. Fig. 3 is a side view of the same. Fig. 4 is a view inside elevation of the presser plate and its Fig.

5v is a view in sfide elevat-ion,`partly in section, of one of thestandards and the pivot therein which aords the pivot for the lever;

and Fig. 6 is a longitudinal vertical section- The standards are boltedto the carriage in the proper position. Thestandard B carries the knifeedged pivot D for the lever E constituting the cross bar, which pivot isin the form of a ilanged box secured through the medium of the flange tand screw bolt t', in the slot of the standard B. Theinner end of thescrew bolt t receives the handle F, which perxnits the connectionbetween the pivot box and standardto'betightenedorloosened,andhenceenables the pivot to be raised or lowered. It is preferred to cast onthe interior of the pivot box D the Vknife points s, the inclinationlaterally from which marks the limit of oscillation possible in thelever. The lever E is provided at end onewith a handle r, and at theother receives the counterweight G, which is shown assnpported by achainG.

inward projecting stud E', which is transversely bored and receives thebolt q, which aiords a pivot for the cam l-I having the han- Toward itshandle end the lever E is provided with an dle H The relation of the camH with the lever E is such that it serves to bind the lever in itsadjusted position in the standard B, while at the same time it aords aready release to permit the lever to be raised or lowered. The presserplate I is provided with a central stud p, bored to receiveV a bolt 10'through the medium of which it is pivotally connected with the head K,from which extends upward the bolt o carrying the spring n. The boltpasses through a lug m cast upon,

to extend laterally from, the square collar L. The spring 'n extendsbetween lug fm. and the head K, and its tension is adjusted by the ad-IOO jnsting nnto. The collar L is of a dimension to adapt it to slidefreely upon the lever E, which it embraces. On the interior the upperand lower inner faces of the collarare formed to produce opposite knifepoints Z Fig. 6, and the collar is also bored through its upper wall toreceive screw bolts 7a 7.3.

The operation is as follows z-The lever pivot, D, having been adj ustedat the proper point on the standard B', the lever E is then introducedinto its pivot bearings, having previously received the collar Lcarrying the presser plate. The opposite end of the lever slides freelyin the slot of the standard B, which latter is capable of movement onits pivot C to accommodate itself to the required conditions. Theconnterpoise G, by counterbalancing the presser plate, causes themanipulation of the lever to be easier and holds it normally in anelevated position. Timber having been placed upon the carriage fortenoning, and the binding cam 1I lifted to release the lever E andpermitit to be lowered, the presser plate is rmly applied to the timber,to the configuration of which it accommodates itself by reason of theuniversal bearings afforded by the tilting at knife points Z and thepivot at p', and the binding cam is then turned down to hold the leveriirmlyin this position. The handle of the lever may be used to assist indrawing the carriage back after tenoning.

That I claim as new, and desire to secure by Letters Patent, is

1. In combination with alever, having pivot bearings above the carriage,a collar having internal knife bearings mounted upon said lever, and apresser plate pivotally connected to and supported by said collar,substantially as described.

2. In a clamp of the character described, in combination with thepresser-plate carryinglever and with the standard extending upward fromthe carriage, the pivot bearing D, comprising a box having knifebearings to receive the lever, said box having a screw and slotconnection with the standard, whereby it is adjustable thereon,substantially as described.

3. The means for supporting the presser plate upon a pivoted lever in aclamp of the character described, comprising a collar L, having theknife bearing, and provided with the set screws 7c, substantially asIand for the purpose set forth.

4. A clamp comprising slotted standards extending vertically npward fromthe carriage, one having a vertically adjustable knife bearing, a leverhaving its pivot in said knife bearing, a binding cam holding said leverin engagement with the other standard, a collar L upon the lever andhaving the inner knife bearing, a spring encircled bolt supported onsaid collar, and a presser plate pivotally connected with said bolt, theparts being arranged to operate substantially as described.

WILLIAM II. BENNETT.

In presence of- M. J FROST, J. N. ilANsoN.

